| Answer | Crossword Clue |
|---|---|
| OTTO | Aviation pioneer Lilienthal |
| OTTO | German aviation pioneer Lilienthal |
| OTTO | Aeronautical pioneer Lilienthal |
| SIKORSKY | Aviation pioneer |
| WILBURWRIGHT | Aviation pioneer |
| EARHART | Aviation pioneer |
| EARHART | Pioneer in aviation. |
| SIKORSKY | Aviation pioneer Igor |
| IGOR | Aviation pioneer Sikorsky |
| WILEY | Aviation pioneer Post |
| ELY | Aviation pioneer Eugene |
| CESSNA | Aviation pioneer Clyde |
| LEAR | Personal-aviation pioneer |
| BLERIOT | French aviation pioneer Louis |
| IGOR | Soviet aviation pioneer Sikorsky |
| EARHART | American pioneer in aviation. |
| PEARSE | New Zealand aviation pioneer Richard |
